Oracle Helidon 4.5.1 Imperative Web Server information disclosure

Summaryinfo

A vulnerability was found in Oracle Helidon 4.5.1. It has been classified as problematic. The affected element is an unknown function of the component Imperative Web Server. The manipulation leads to information disclosure. This vulnerability is listed as CVE-2026-73910. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Oracle Helidon 4.5.1. It has been rated as problematic. This issue affects an unknown code block of the component Imperative Web Server. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

The advisory is shared at oracle.com. The identification of this vulnerability is CVE-2026-73910 since 08/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/19/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Oracle

Name

• Helidon

Version

• 4.5.1

License

• commercial

Website

• Vendor: https://www.oracle.com

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